viewpoint: add reverse viewpoint function
authorAlexandre Janniaux <ajanni@videolabs.io>
Fri, 8 Mar 2019 09:35:38 +0000 (10:35 +0100)
committerSteve Lhomme <robux4@ycbcr.xyz>
Mon, 11 Mar 2019 08:19:34 +0000 (09:19 +0100)
It reverses the transformation (here rotation only) which is helpful to
convert the viewpoint rotation into a world rotation for video outputs.

Signed-off-by: Steve Lhomme <robux4@ycbcr.xyz>

No differences found